Github user cristofolini commented on the pull request: https://github.com/apache/cloudstack/pull/1410#issuecomment-199072462 @ustcweizhou I still can't help but notice that lines 1066-1086 and 1362-1382 in the `VolumeOrchestrator` class seem to contain exactly the same piece of code. I think extracting this to its own method would go a long way to improve this PR.
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